Flexible tubing.



PATENTBD JAN. 3l, 1905.

V' N.'78'1,56o. s, SGOGNAMILLa FLEXIBLE TUBING.

ABrLIoATIoN Hmm JUNE 22, um.

' vi @da-@6556 inclosing casing of metal.

USALVATORE SOOGNAMILLO, OF NEW YORK, N. Y., ASSIGNOR TO AUTO- Patented January 31, 1905.

PATENT OFFICE. j

MOBILE SUPPLY MANUFACTURING COMPANY, OF BROOKLYN, NEW

` 'FLEXIBLE TUBING.-

SPEGIFICATION forming part of Letters Patent'No. 781,560, dated January 31,1905.

` Application tied mm2, i904.. sea NQ. 213,689.

To 'wZZ whom t may concern:

Beit known thatI, SALVATORE SooGNMrLLo, i

a citizen of the United States, residing at New York, in the county of New York and State of New York, have inventedv new and. useful Improvements in Flexible Tubing, of lwhich the following is a specification.. l l This invention relates-to flexible tubing or metallic spiral hose; and the primary object of the same is to provide a casing composed of aspirally-wound metal strip having yield.- ing interlocking or overlapping members of a specific contour and inclosing a packingstrip-toform a reliable jointure, the casing being fitted over an inner resilient sustaining; coil of wire, the convolutions of the latter forcefully intersecting the inner portions of the convolutions of the metal strip and firmly holding the joints of said metal strip intact, and also operating' to resist crushing strain.

A further object of the invention is to form a tube having increased longitudinal strength and freely bendable laterally to accommodate itself to any and all uses to-which an article y of this class is applicable.

VWith these and other objects and `advan-v tages in view `the invention consists in', the construction and arrangement of parts, which will be more fully hereinafterset forth.

In the drawings, Figure 1 is a view in ele-.

vation lof a-tube embodying the features'. of the'invention. Fig. 2 is a View of the same in longitudinal section. Fig. 3 isr a detail view of a portion of the tube, particularly illustrating the joint between the constituents of the tube, on an enlarged scale.

Similar numerals of reference are employed to indicate corresponding'parts in the several views.

The numeral-1 designates a'metal strip of suitable width and spirally wound to form an This strip is bent by suitable means to provide an outer boxlike member 2, with an inwardly-curved flange 3, and a concave seat member 4:, with an outwardly-bent terminal 5. The flange 3 of the box-like member is movably fitted in the concave seat member 4 of the adjacent convolution throughout the entire spiral winding of the strip,vand within the in'closure thus formed a packing strip or cord 6 is interposed and preferably circular in v cross-section. The packing strip or cord 6 is directly embraced by the flange 8, the inner portion of the seat pressed around the packing-strip inclosed in the bent members of the metallic strip. The interlocked convolutions of the metallic strip are loose enough, however, to permit the tubing to be arcuately bent in opposite directions -and also to allow for longitudinal expansion and contraction to accommodate various appli- `cationsand'fconditions which will affect the constituents of the tubing.

The improved tubing or hose can be readily manufactured andthe parts quickly assem-l bled, owing to the disposition of the same, and 'the vmost expeditious method consists in first forming the inne'r sustaining-coil and applying the outer strip thereover, at the same time feeding the packing-strip into the seats 6 as the latter are shaped.

It will also beundei-stood that changes in the proportions and dimensions may be resorted to without departing from the spirit of the invention.

Havingthus fully described the invention, what is claimed as new is- 1. A liexible tube having a spirally-wound metal strip formed with an inclosing member and a seat extending longitudinally thereof, a packing-strip introduced in the successive seats and covered by the closing members,

.and a yielding coil having convolutions inter-` secting and closely fitting against the inner portions of the seats.

2., A iexible tube consisting `of a spirallywound metal strip having oppositely-bent members to provide an outer box-like inclosure and an inner concave seat, the box-like inclosure successively interlocking with the seats, a packing-strip introduced between the seats and box-like inclosures, and an inner sustaining-coil composed of resilientmaterial and having' the eonvolutions thereof closely fitting between and bearing upon the inner portions of the seats.

3. A leXible tube having a spirally-wound metal strip with reversely-positioned bent members extending longitudinally thereof, the said bent members of the successive convolutions loosely interlocking, a packingstrip inclosed between the bent men'ibers, and a resilient sustaining-coil lnwing the convolutions thereoil closely litting and bearing against the inner portions of the members` and engaging the spaces between the latter.

In testimony whereof l have hereunto set my hand in presence of two subscribing witnesses.

SALVATORE SCOGNAB'IILLO.

l/Vitnesses:

DANNIE E. DIMMICK, GEO. WT. REA. 

